EXAMPLE 1: New User (Minimal)
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=== Starting Authentication Flow ===

Step 1: Checking if user exists...
✗ User not found. Registering new user...
Error: Registration failed - null


EXAMPLE 1b: New User (Full Profile)
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=== Starting Authentication Flow ===

Step 1: Checking if user exists...
✗ User not found. Registering new user...
Error: Registration failed - null


EXAMPLE 2: Existing User
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=== Starting Authentication Flow ===

Step 1: Checking if user exists...
✗ User not found. Registering new user...
Error: Registration failed - null


EXAMPLE 3: Verify Code
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After receiving the code via email, call:
completeAuthentication('user@example.com', '42');